Chuck.



o. o. HANSEN.

CHUCK.

APPLICATION FILED FEB.23, 1909.

1,079,646, y Patented Nv. 25, 1913.

Jaya. C 2515.

UNITED :STATES PATENT caricia.

CHAELES o. HANSEN, or EASTON, PENNSYLVANIA, A's'sIeNoR To INGERsoLL-EAND COMPANY, or NEW YORK, N. Y., A CORPORATION oF NEW JERSEY.

CHUCK.

T o all whom 'it may concern:

Be it known that I, CHARLES C. HANSEN, a citizen of the United States, and resident of Easton, in the county of Northampton and State of Pennsylvania, have invented a new and useful Improvement in Chucks, of which the followin is a specification.

This invention re ates to an improvement in chucks and more particularly to rock drill chucks and has for its object to provide certa-in improvements in the construction, form and arrangement of the several parts of the chuck whereby the parts may be brought wit-hin a very small compass; this very desirable result being accomplished by locating the clamping shoe and the wedge key upon opposite sides of the chuck within the strap which surrounds the chuck.

In the accompanying drawings, Figure 1 represents aI chuck in side/elevation embody.- ing the invention, with a drill steel shown clamped therein, Fig. 2 is an outer end v'ievvq of the same, Fig. 8 is an inverted plan view, Fig. 4 is a longitudinal central section taken in the plane the une A A of Fig. a, Fig. 5 is a transverse section taken inthe plane of the line B-B of Fig. 1, and Fig. 6 is a detail inverted plan view of the clamping shoe.

The drill steel is denoted by 1 and the drill steel receiving chuck by 2. The drill steel receiving socket is denoted by 3 and a longitudinally arranged elongated slot 4 is provided through the wall of the chuck. A hollow bushing 5 is located within the socket 3 of the chuck, which bushing is provided with a longitudinally arranged elongated slot 6 in alinementwith the slot 4 inthe chuck 2. A strap 7 surrounds the chuck 2, which strap is of elongated form with its side walls engaging the sides of the chuck and its end walls spaced a distance therefrom. A clamping shoe and a wedge-key are located upon' opposite sides of the chuck within the said strap 7, the clamping shoe having a head S provided with a transversely eonvexed outer face fitted to the portion of the st-rap 7 which it enga-ges and a shank 9 having a transversely concaved face fitted to engage the drill steel 1. The reduced portion 9 of this clamping shoe extends through the slots 4 and 6 in the chuck and bushing respectively into engagement with the drill steel 1.

Patented Nov. 25, 1913.

Application led February 23, 1909. Serial N o. 479,325.

The wedge-key 10 is provided with retaining heads 11 and 12 at its ends and the Inner face of this Wedge key is tlattenedto engage the flattened face 13 of the chuck. The outer face of this wedge-key 10 is convexed .transversely solas to it the portion of the strap 7 which it engages. This portion of the strap 7 which isengaged by the wedge key is tapered While the portion that is engaged by the clamping shoe is parallel with the axis of the chuck so that 'as the wedge-key is driven outwardly along the chuck, it will cause the clamping shoe to be forced against the drill steel by a lateral movement.

The chuck is provided with a circumferential recess 14 Vforming shoulders between which the strap 7 is retainedagainstlongitudinal displacement when in position. The chuck is provided With aflattened face 15 at its outer end opposite the tiattened face 13. These flattened faces 13 and 15 are Hush with the bottom of the circumferential recess 14 so as to permit the strap 7 to be inserted into position and removed by turning the strap` rotatively until its opposite side walls are brought into register with the said flattened faces.

The parts are assembled befre the drill steel is inserted into the chuck by first in sert-ing the strap into position, then inserting the clamping shoe and nally inserting the wedge-key.

By locating the clamping shoe and wedgekey upon opposite sides of. the chuck, the parts ,are brought into a very compact relationship and also the chuck is made much stronger because of the balancing of the parts upon b-oth sides of the chuck.-

While I have shown this invention as applied to a drill steel chuck, it is evidentthat it could be appliedA equally well to chucks and tools of any description.

What I claim is 1. A chuck receiving a drill steel, a laterally. movable strap surrounding the chuck, a clamping shoe and a wedge key located upon opposite sides of the chuck` within said strap, said clamping shoe engaging the steel and strap, and said wedge key engaging the chuck and strap.

2. A chuck for receiving a drill steel, a laterally movable strap surrounding the chuck, a clamping shoe and a Wedge key located upon opposite sides ofthe chuck Within said strap, Said clamping shoe engaging the steel and said wedge key engaging the chuck, said chuck being provided with shoulders between which the strap is held against longitudinal displacement in both. directions.

3. 4A4 chuck fqr receiving a drill steel, an elongated laterally movable strap surrounding the chuck, a clamping shoe and a wedge key located upon opposite sides of the chuck Within said strap, said clamping shoe engaging the steel and said strap engaging the chuck, said chuck having a4 circumferential groove forming shoulders for yretaining the strap against longitudinal displacement and oppositely arranged flattened taces intersecting the groovel for permitting the insertion and removal of the strap by ebruary 1909.

' CHARLES C. HANSEN. Witnesses:

S. H. PAINTER, ARTHUR J. SHIMER. 

